Grammar worksheets: gerund or infinitive?

Complete the following sentences using an –ing form or an infinitive.

1. He threatened ………………….. the police if I didn’t leave the place.

a) to call

b) calling

c) Either could be used here

2. I promise ……………….. smoking.

a) giving up

b) to give up

c) Either could be used here

3. I intend …………………… a business.

a) to start

b) starting

c) Either could be used here

4. He asked me ………………… at once.

a) to go

b) going

c) Either could be used here

5. These children have to be taught ……………………. their teachers.

a) to respect

b) respecting

c) Either could be used here

6. That experience taught her the importance of ………………….. good friends.

a) having

b) to have

c) Either could be used here

7. Susan told me ……………………….

a) to come

b) coming

c) Either could be used here

8. She wants ………………….. with us.

a) coming

b) to come

c) Either could be used here

9. My sister wishes …………………… her communication skills in English.

a) to improve

b) improving

c) Either could be used here

10. I started ………………….. when I was sixteen.

a) to teach

b) teaching

c) Either could be used here

Answers

1. He threatened to call the police if I didn’t leave the place.

2. I promise to give up smoking.

3. I intend to start a business.

4. He asked me to go at once.

5. These children have to be taught to respect their teachers.

6. That experience taught her the importance of having good friends.

7. Susan told me to come.

8. She wants to come with us.

9. My sister wishes to improve her communication skills in English.

10. I started teaching / to teach when I was sixteen.